Centrifugal impeller for decreasing chances for hemolysis and thrombus to occur

A centrifugal, impeller technology, applied in the field of medical devices, can solve the problems of contaminated blood, low durability, bearing wear, etc., to achieve the effects of short exposure time, avoidance of thrombosis, and small volume

Pending Publication Date: 2018-01-09
北京安生生物技术有限责任公司
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Problems solved by technology

[0003] The development of artificial heart pumps has mainly gone through three stages. The first generation is a bionic pulsating pump, which has a similar systolic and diastolic process to the heart, but is bulky, has low durability and is unreliable; the second generation is a rotary pump with mechanical bearings. Stabl

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  • Centrifugal impeller for decreasing chances for hemolysis and thrombus to occur
  • Centrifugal impeller for decreasing chances for hemolysis and thrombus to occur

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[0022] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

[0023] In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

[0024] In the description of the present invention, it should be noted that the terms "installed", "connected"...

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Abstract

The invention provides a centrifugal impeller for reducing the occurrence of hemolysis and thrombus, comprising a rear cover plate and a plurality of blades arranged at intervals on the surface of the rear cover plate, the inlet angle of the blades is 10-40°, and the outlet of the blades The placement angle is 25-65°, the wrap angle of the blade is 70-130°, the thickness of the blade is 0.6-5mm, the thickness of the leading edge of the blade is less than or equal to the thickness of the trailing edge of the blade, and the width of the impeller outlet is is 2-15mm, and the suction diameter of the impeller of the centrifugal impeller is 10-25mm. The centrifugal impeller of the present invention can keep the wall shear stress within a reasonable range and effectively reduce the occurrence of hemolysis and thrombosis.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a centrifugal impeller for reducing hemolysis and thrombus. Background technique [0002] The incidence of severe heart failure patients is increasing year by year, but the number of heart donors is very small, and they also face the problems of rejection, infection and other secondary diseases, and the artificial heart pump can assist or replace the function of the heart, so the artificial heart pump Become an important way to solve severe heart failure. [0003] The development of artificial heart pumps has mainly gone through three stages. The first generation is a bionic pulsating pump, which has a similar systolic and diastolic process to the heart, but is bulky, has low durability and is unreliable; the second generation is a rotary pump with mechanical bearings. Stable and efficient, but there are problems of blood pollution and bearing wear; the third generation is a magne...

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Application Information

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IPC IPC(8): A61M1/10
Inventor 王钊赵晴张宇王梓慕李东海
Owner 北京安生生物技术有限责任公司
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